Answer key 23 on page 340

1. Answer Key: 23 on
Page 340
HISTORICAL FACTS

2. These sentences contain non-defining
adjective clauses.
The idea that is emphasized is in bold
face.
Note that non-defining clauses use
relative pronouns “who” or “which” and
NOT “that.”

3. The Great Fire of London, which
destroyed about 13,000 houses,
only killed eight people.
The Great Fire of London, which
only killed eight people, destroyed
about 13,000 houses,
1

4. The Minoan civilization, which
suddenly disappeared in 1600
B.C.E, may have been destroyed by
and earthquake.
The Minoan civilization, which may
have been destroyed by and
earthquake, suddenly disappeared in
1600 B.C.E,
2

5. Amelia Erhart, who was the first
woman to fly solo across the
Atlantic Ocean, disappeared in
1937.
Amelia Erhart, who disappeared in
1937, was the first woman to fly solo
across the Atlantic Ocean
3

6. In 1967, Christiaan Barnard performed
the first human heart transplant, which
was a major medical accomplishment
at that time.
This is the only possible answer for
this item unless you use the passive
voice: In 1967, the first human heart
transplant, which was a major
medical accomplishment at that
time, was performed by Christiaan
Barnard.
4

7. The Taj Mahal, which is one of the
most beautiful buildings in the
world, was completed in 1648.
The Taj Mahal, which was completed
in 1648, is one of the most beautiful
buildings in the world.
5

8. Alexander Fleming
discovered penicillin,
which became the first
widely used antibiotic.
This is the only possible answer
for this item unless you use the
passive voice: Penicillin, which
became the first widely used
antibiotic, was discovered by
Alexander Fleming.
6

9. Antarctica, which was not
discovered until the 1800s, is
completely covered with ice.
Antarctica, which is almost
completely covered with ice, was not
discovered until the 1800s.
7

10. The Polynesian Islands, which have
been populated for thousands of
years, are spread over 70.1 miles of
ocean.
The Polynesian Islands, which are
spread over 70.1 miles of ocean, have
been populated for thousands of years,
8

11. Oranges, which were being grown
in China as far back as 2500 B.C.E.,
probably originated in Southeast
Asia.
Oranges, which probably originated
in Southeast Asia, were being grown
in China as far back as 2500 B.C.E.,
9

12. Coffee, which was a popular drink
in many countries by 1100, was
discovered in Ethiopia.
Coffee, which was discovered in
Ethiopia, was a popular drink in
many countries by 1100.
10